Removing Reverse Polarity Protection

I have this Jetbeam BA10 which I really like. Its supposed to work only with AA batteries, but it works just fine with 14500 cells. Trustfire works fine, since they have narrower button top, however Nitecore 14500 cells wont fit, since they have wider button top and Jetbeam has this Reverse Polarity protection ring. Since I bought these cells just for this light, I really want to use them. I want to go ahead and remove that ring, but before I get violent I wanted to check if anyone has done this before and has any tips.

Thanks :slight_smile:

Can you tell what is the ring made of? My Preon P0 has a little firm foam ring.

Its plastic.